US4015491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turret lathe
Assignee: Manurhin Automatic SA
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Filing: 1976-04-08
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Granted: 1977-04-05
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Expires: 1996-04-08
Abstract
Abstract A horizontal shaft, to one end of which there is affixed a tool-carrying turret, is rotatably mounted in a part of the frame of the lathe. The above shaft is parallel to the axis of the spindle of the lathe, such spindle being rotatably mounted in the head stock. The shaft and the turret are reciprocated longitudinally of the axis of the shaft by a longitudinal advancing mechanism, such shaft also being rotated in steps, that is, indexed around its axis by a transverse feeding mechanism. Such transverse feeding mechanism comprises an oscillating arm which is selectively rigidly connected to the shaft carrying the turret; the oscillatable arm is pivotally connected by an articulating means to a driving rod connected to a driving mechanism which is mounted for pivotal movement around a fixed axis which is parallel to the shaft carrying the turret and is spaced from the latter by distance R equal to that at which such axis lies from the axis of the articulating means connecting the outer free extremity of the oscillating arm to the driving rod.
Inventors
- 👤 Fernand Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:21
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/16; B23B3/161; B23Q; B23Q1/00; B23Q1/25; B23Q1/44; B23Q1/48; B23Q1/4804; B23Q1/4809; B23Q1/50; B23Q1/52; B23Q16/00; B23Q16/02; B23Q16/04; B23Q16/06; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5164; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1453; Y10T74/1494; Y10T82/00; Y10T82/25; Y10T82/2508; Y10T82/2531
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
In a turret lathe having a fixed frame, a lathe spindle mounted for rotation on the frame, a tool-carrying turret mounted on a turret-carrying shaft which is parallel to the spindle of the lathe, such shaft being adapted for translational movement along its axis under the action of a longitudinal advancing mechanism and angular displacement around its axis under the action of a transverse advancing mechanism, the improvement wherein the transverse advancing mechanism comprises an oscillating arm which is adapted to be fixedly connected to the turret-carrying shaft, a driving means having a driving rod, the arm being connected at its extremity by an articulating means to the driving rod of the driving means, the driving means being pivotally mounted around a second axis fixed parallel to the axis of the turret-carrying shaft, the second axis being separated from the axis of such shaft by a distance R equal to that which separates it from the axis of the articulating means connecting the free extremity of the oscillating arm to the driving rod.
Claim 2
Dependent Claim
173 words
In a turret lathe having a fixed frame, a lathe spindle mounted for rotation on the frame, a tool-carrying turret mounted on a turret-carrying shaft which is parallel to the spindle of the lathe, such shaft being adapted for translational movement along its axis under the action of a longitudinal advancing mechanism and angular displacement around its axis under the action of a transverse advancing mechanism, the improvement wherein the transverse advancing mechanism comprises an oscillating arm which is adapted to be fixedly connected to the turret-carrying shaft, a driving means having a driving rod, the arm being connected at its extremity by an articulating means to the driving rod of the driving means, the driving means being pivotally mounted around a second axis fixed parallel to the axis of the turret-carrying shaft, the second axis being separated from the axis of such shaft by a distance R equal to that which separates it from the axis of the articulating means connecting the free extremity of the oscillating arm to the driving rod.
Claim 3
Dependent Claim
57 words
A turret lathe according to claim 1, comprising a mechanical positioning system provided between the driving means and the oscillating arm so as to associate at each position of the latter a determined position of the driving mechanism parallel to the action of the positioning resulting from the articulation of the driving rod upon the oscillating arm.
Claim 4
Dependent Claim
82 words
A turret lathe according to claim 2, wherein the positioning system comprises a stabilizing lever mounted to pivot around a fixed axis parallel to the axis of the shaft which carries the turret and separated from the axis of the latter by the distance R, a positioning rod slidably mounted in such lever and articulated to the oscillating arm for pivoting around the axis of the recited articulation, and a link connecting the driving mechanism and the extremity of the stabilization lever.
Claim 5
Dependent Claim
52 words
A turret lathe according to claim 1 comprising a locking and indexing device provided between the oscillating arm and the shaft carrying the turret so as selectively immovably to lock the two elements together in a finite number of precisely determined angular positions which are uniformly spaced with respect to each other.
Claim 6
Dependent Claim
41 words
A turret lathe in accordance with claim 4, comprising means for changing tools adapted to unlock the indexing lock and rapidly to displace the turret around its axis through an angle equal to that which separates successive tools upon the turret.
Claim 7
Dependent Claim
58 words
A turret lathe according to claim 5, wherein the means for changing tools comprises a pivotal arm adapted to be connected by a second locking and indexing mechanism to the shaft which carries the turret in a number of finite exactly determined angular positions, and a rapidly acting motor means for deplacing the lever through a predetermined angle.
Claim 8
Dependent Claim
49 words
A turret lathe according to claim 1, wherein the driving rod is constituted by a screw shaft which is rotated around its axis by the driving mechanism, and the oscillating arm is connected to the driving rod by the intermediary of a nut which cooperates with the screw shaft.
Claim 9
Dependent Claim
22 words
A turret lathe according to claim 7, wherein the motor means comprises a stepping motor operating through an associated speed-reducing drive train.
Claim 10
Dependent Claim
38 words
A turret lathe according to claim 1, wherein the longitudinal advancing mechanism comprises a screw nut connecting means disposed between the turret-carrying shaft and the frame, and a motor means for longitudinally advancing and retracting such connecting means.
Claim 11
Dependent Claim
39 words
A turret lathe according to claim 1, wherein the shaft which carries the turret is slidingly mounted in a caisson fixed upon the frame, said caisson enclosing the transverse driving mechanism associated with the shaft which carries the turret.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |